au.gov.ga.earthsci.discovery.ui.preferences.DiscoveryServiceLabelProvider.java Source code

Introduction

Here is the source code for au.gov.ga.earthsci.discovery.ui.preferences.DiscoveryServiceLabelProvider.java

Source

/*******************************************************************************
 * Copyright 2013 Geoscience Australia
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ******************************************************************************/
package au.gov.ga.earthsci.discovery.ui.preferences;

import java.net.URL;

import org.eclipse.jface.viewers.ITableLabelProvider;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.jface.viewers.LabelProviderChangedEvent;
import org.eclipse.swt.graphics.Image;

import au.gov.ga.earthsci.application.IconLoader;
import au.gov.ga.earthsci.common.ui.viewers.IFireableLabelProvider;
import au.gov.ga.earthsci.discovery.IDiscoveryService;

/**
 * Label provider for a table viewer displaying {@link IDiscoveryService}s.
 * 
 * @author Michael de Hoog (michael.dehoog@ga.gov.au)
 */
public class DiscoveryServiceLabelProvider extends LabelProvider
        implements ITableLabelProvider, IFireableLabelProvider {
    private final IconLoader iconLoader = new IconLoader(this);

    @Override
    public String getColumnText(Object element, int columnIndex) {
        if (!(element instanceof IDiscoveryService)) {
            return element.toString();
        }
        IDiscoveryService service = (IDiscoveryService) element;
        return DiscoveryServiceViewerColumn.values()[columnIndex].getText(service);
    }

    @Override
    public Image getColumnImage(Object element, int columnIndex) {
        if (!(element instanceof IDiscoveryService) || columnIndex != 0) {
            return null;
        }
        IDiscoveryService service = (IDiscoveryService) element;
        URL iconURL = service.getProvider().getIconURL();
        if (iconURL != null) {
            return iconLoader.getImage(service, iconURL);
        }
        return null;
    }

    @Override
    public void fireLabelProviderChanged(LabelProviderChangedEvent event) {
        super.fireLabelProviderChanged(event);
    }
}